Signaling system for railways.



M. w. ZABEL. SIGNALING SYSTEM FOR RAILWAYS. APPLICATION FILED APR. 13,1907.

WITNESSES:

Patented Apr. 13, 1909.

MAX w. most, or cnionoo, ittirois.

SIGNALING SYSTEM FOR RAILWAYS.

Specification oi Letters Patent.

Patented April 13, 1909.

Application filed April 13, 1907. Serial No. 368,07.

Be it known that l, MAX W. ZAnnL, a citizen of the [initial 8| ates,residing at ClIIL'HQ'U, in the (acuity of {Tools and fitatc of Illinois,have invented a certain new and useful Irnproverncnt in SignalingSystems for liail- Ways, of which the following is a full, clear,concise, and exact description, reference bcing had to the aeconipanying drawings, forniin av part of this s mciliration.

itly invention relates to signaling systems for railways and has for itsohjcct the provision of improved means for indicating at :1 suitablepredetermined point the movement. of trains in. the o )cration ofrailway systems.

It is frequently the practice to divide a system into train dcspatchersdivisions, which may be about one hundred miles long, and this divisionis suhaliridcd again into suitable blocks.

More particularly my invention conten'iilatcs that the'passagc of trainsfrom one hlock to another, and the movement of the trains in the blockmay be correctly indicated at the train dcspatchers ofl'i'cc, so that.at all times he can he fully informed as to lh po sitions of hisvairious trains.

I will describe my invention more in detail by reference to theaccompanying drawing il u strating one cmbodirm-nt thereof. in theillustration I have shown for the sake of clearness, one train desmtoher's division com rising the blocks 1, 0, (Z, (3f, 5 It, i and Thistrain despatchcr's division may be assumed to he one hundred miles long,and the various blocks ten miles 1011 that is, the stations may heconsidcrcd to )c about ten miles apart.

I insulate the rail sections of one block from the rail sections of theadjoining blocks. I then provide in each block a battery 2 which throughthe rails arc in closed circuit. with a relay 3 which relay, therefore,is normally attracted. \l hon, however, the wheels of a train enterhlock a shon n for instance, then said wheels, diagranunaticallvindicated at 4 4, short circuit the battery '3 through said. wheels andthe connecting axle, and thereby allow the armature 5 of the relay to fal back and make a circuit conncrlion.

I provide a line wire 6 running alon; (he right-of-way, which line wireenters lhc train dcspatcher's oiiicc 1 and is tin-re conncclml tosuitable generators, 7, S, 9, l0, 1 1, l2, 1;), 14, 15, and 16. Ipreferably pcrniancrnly connect these generators lo thrlinc wire ('5.

pedancc coils,

One side of the generators 7 to 16 is connectcd to ground at 17. Iprefer to gear the arinaturc shafts of thosegenerators together, so thatthey will furnish alternating currents of different prc-dctcrmincd lrcrucncics, for instance generator 7 may give a irequoncy of 10, generatorit a frequency of 20 and so on up to gcimrator 16 which may give a:frequency of 100 cycles per second. A suitable prime mover 18 isprovided for o crating the generators. This prime mover ias suitablegoverning facilities, so that it will operate at any uniform speed andthus keep the frequencies as supplied by the generators constant. Iconnect the generators to the line wire (3, through the inter-positionofsuitahlc reactive devices, for instance generator 7, is connected tothe line (5, through an im edancc coil 19, and a condenser 20. he valuesof the impedance coil 19 and the condenser 20 are so chosen that theywill permit the operative flow there through only of a frequency of 10or very nearly 10. Al other frequencies being practically excluded, thusgenerator 8 is connectcd to the line wire 6 throu h the intcr-positionof impedance coil 21 and condenser 22 which perm ts of the op crativcpassage there through only of the frequency 20. In this manner thevarious frequencies from 10 to 100 as delivered. by the generators isconstantly maintained upon the inc wire 6, and no serious interferenceis caused, because one side of the said gcnorators is grounded, andbecause the impedance coils and condensers associated with therespective generators only lpermit of the opera.- tivc passagetlivlellll'oll 1 ol altcrn sting currents of the predeterminedfrequency.

Suitable provision, such for instance as the insulation oi iron in thecore of the imis made to lessen harmonic lntcr-zu-tion. The line VtllC(3 passirv along the blocks from u to /L' is connected as ollows: Forinst once at block a the impedance coil 10 and condenser 20 are ofthcsame proportionate vrlucs [hr iinpcdanre coil 19 and condcnscr 20 atthe train despair-hens oliicc, thus oi all the IIPqLKUl'lUS that areconstantly maintained on llll line wire 6, there is one viz. thatdelivcrcd by Qi-nerator 7 which can flow through the relay 225 when thecircuit through said relay 23 to impedance coil 19 and condenser 20 isroundcd by the armature 5 of the relay 3. liiltcwise impedance coil 21and condenser 22 at block b will let through only such frequency as isfurnished by generator 8, so that relay 24 will operate only when thecircuit throu 7h said relay and its connected impedance coi andcondenser is grounded through the armature 5 of relay 3 in block b. Thesame is true at the train despatcher's office where relay 23 operatesonly as relay 23 at block a operates, in other words rela 23 willoperate when there is a train in b ock a, relay 24 operates when thereis a train in block b, relay 25 0 )erates when there is a train in block0, and re ay 30 operates when there is a train in block 7c. Similarconditions prevail for the intervening blocks and relays.

I have provided at the train despatchers oflice suitable currentsupplying means 31 which can preferabl furnish current to lamps 32 thecircuit t rough which lamps is closed and controlled b T the rela s 23,24 etc. thus we have at t 1e train espatchers office variouslamps 32, 32up to 32*, which burn whenever there is a train corres onding to saidlamps in the respective bloc lis. As the train moves into one block itshort circuits the corresponding relay 3, thus grounding the line wire 6through the proper impedance coil and condenser, and thus but onefrequency will operativel flow thus to operate the corresponding amp.Likewise a train in a different block will ignite its correspondinglamp, and it will permit the operative flow of a current having afrequenc correspondin to said block. I provide amps 33 in bloch a whichare associated with current su plying means 34 which are under thecontrol of relay 23; thus whenever a train is in block a through thelamps 33, it sets a signal along the right-of-way in front of it andbehind it, thus giving notice of itsmovement alon the right-of-way atthe same time that it indicates its motion at the train despatchersoffice.

While I have herein shown and particularly described the preferredembodiment of my invention, 1 do not wish to limit myself to the preciseconstruction and arrangement as herein shown and particularly described,but

Having thus set forth the essential re uire ments of an operativesystem, what I claim as new and desire to secure by Letters Patent is:

1. A signaling system for railways comprising a si al receiving station,a railroad track, a se ective signal receiving device at said station,and electric means electrically associated with-said railroad trackadapted to selectivel operate said signal receiving device to in icatevarious positions of trains on said railroad track.

2. A signaling system for railways comprising a signal receivingstation, a railroad track, a selective signal receiving device at saidstation,'and electric means electrically associated with said railroadtrack and under the selective control of trains alon said railroad trackadapted to selective v operate 1 said signal rvci-ivin device toindicate the position of trains a ong said railroad track. 3. Asignaling system for railways comprising a selective signal receivingdevice associated with a plurality of sections of a railroad track, amelectric means electrically associated with sections of said railroadtrack for selectively operatin I said signal receiving device by cars inthe different sections.

4. A signaling system for railways co1nprising a selective signalreceiving device associated with a plurality of sections of a railroadtrack, and electric means associated with each section of track andcontrolled by the presence of cars in their respective sections toselectively operate said selective signal device.

5. A signaling system for railways comprising a selective signalreceiving device associated with a lurality of signal operating meansadapted l spectively to various sections of a railroad track, andcircuit changing means associated with each section and controlled bycars in i said section, said circuit changing means I being associatedwith the signa operatin means to selectively operate theaforesaidselective signal receiving device.

6. A signaling system for railways comprising a signal receivingstation, a railroad track divided into sections, an electric'devi'ceelectrically associated with each said section of track and connected tothe signal receiving station, and circuit controlling means wherebyrailroad cars in any section will send a selective signal to the signalreceiving station.

7. A signaling system for railways comprising a selective signalreceiving device associated with the various sections of a railroadtrack, electric means associated with each section of the railroad trackfor transmitting a selective signal to said signal receiving device,railroad cars for operating said electric device and a signal providedon the right-ofway oi each section to other with means for tron istransmitted from its associated section to the signal 'receivin station.

8. A signaling system or railwa s comprisin a selective signal receivingeviee, a plurality of sections of railroad track, electric meansassociated with each section for the purpose of selectively operatingthe signal re- ,ceivin i'levicc, railroad cars for operating said 0cctric means, a signal provided with each section, electric device [oroperating a si nal when its associated section transmits a se ectivesignal to the receiving station, and additional signals for adjoiningsections operated bythe first aforesaid signal.

9. A signaling sytem for iailwavs comprising a selective signalreceiving device, a plurality of sections of railroad track, electricmeans associated with each said section for the purpose of selectivelyoperating the or electrical connection re-.

operating said signal w en a selective indie-a;

signal receiving device, railroad cars for operating said electricmeans, a signal provided with each section, electric devices foroperating a signal when its associated section transmits a selectiveindication to the receiving station, and an additional signal operatingronjoii'itly with said last mentioned signal.

10. A signaling system for railways coinprising a selective signalreceiving device, a plurality of sections of railroad track, an electricdevice electrically connected to each section of track, said devicebeing adapted toehange it circuit conditions when cars are present inits associated section, and current supplying means whereby theoperation of said track drvices transmit respectively selectiveindications to the signal receiving device.

11. A railway signaling system comprising a selective signal receivingdevice associated with a plurality of sections of railrr ad track,operating devices associated electrical] with each section of track forcausing a se ective operation of said signal recoivin device, and acontact making device movab e along said sections of railroad track foractuating said operating devices during the time said contact makingdevice is in their associated sections.

12. A railway signaling system comprising a plurality of sections ofrailroad track, an electric device electrically associated with eachtrack section, from which a signal is desired, train wheels foroperating said electric devices, and a selective signal receivingapparatus selectively responsive'to signaling mdications from thevarious said electric devices.

13. A railway signaling system comprising a plurality of sections ofrailroad track, track relavs electrically associated with each tracksection from which a signal is desired, train wheels for operating saidtrack relays, and a selective signal receiving apparatus selectivelyresponsive to signaling indications from the various said track relays.

14. A railway signalim system comprising a plurality of sections 0?railroad track, an electric device electrically associated with eachtrack section from which a signal is desired, train wheels for operatingsaid electric devices, a selective signal receiving aparatus selectivelyresponsive to signaling indications from the various said electricdevices, and current supplfving means for causing the operation of sa"signal receiving apparatus.

15,. Arailwa signaling system comprising a plurality 0 sections ofrailroad track, track relays electrically associated with each tracksection from which a signal is desired, train wheels for operating saidtrack relays, a selective signal receiving apparatus selectivelyresponsive to signaling indications from signal the various said trackrelays, and current sn 1 ing means for causing-the o eration of P Y Psau signal receiving apparatus.

16. A railway signaling system comprising an electric signal receivingap aratus, current supplying means for furnishing currents of difl'crentelectrical character to selectively operate said signal receivingapparatus, a p urality of sections of railroad-track, electrical currentconducting means for associating the various sections of railroad trackwith the signal receiving apparatus and cur rent supplying means, andcircuit controlling a paratus electrically controlled by car w iccls inthe said track sections for causing a change of circuit conditions tooperate the receiving apparatus through the agency ol the currentsupplying means.

17. A railway signaling system comprising an electric signal receiving apara-tus, current so )plying means for furnis ring currents of di erentelectricalcharacter to selectively operate said signal receivingapparatus, a plurality of sections of railroad track, electrical currentconducting means for associating the various sections of railroad trackwith the signal receiving apparatus and current su plying means, andtrack relays electrical? controlled'by car wheels in the said trachsections for causing a change of circuit conditions to operate thesignal receiving apparatus through'the agency of the current supplyingmeans.

18. A railway signaling system comprising an electric signal receiving aparatus, current su lying means for furnis ung currents of (it erentfrequency to selectively o erate said signal receiving apparatus, a purality of sections of railroad track, electrical current conductingmeans for associatin thevarious sections of railroad track with t esignal receiving apparatus and cur-' rent supplying means, circuitcontrollin a aratus electrically controlled by car w 108 in the saidtrack sections for causing a change of circuit conditions and to operatethe signal receiving apparatus through the agency of the current 5pplying means.

19. A railwa signaling system comprising an electric sign id receiving,ap aratus, current supplying means for furms in currents of dilierentfrequency to selectivell y a crate said signal receivin apparatus,-a pura. 'ty of sections. of railro track: electrical current conductinmeans for associatin the various sections 0 railroad track with t 1esignal receiving ap aratus and current sup lying means, trac relayselectrically control ed by sections.

21. A railway signaling system comprising a plurality of sections ofrailroad track, a signal receiving apparatus associated with saidsections, and electric means including closed circuit track portionscontrolled by train wheels for sending selective indications to saidsignal receiving apparatus from said track sections.

22. A railway signaling system, comprising a iluralit'y of sections ofrailroad track, a signa receivin apparatus associated with saidsections, eectrlc means including train Wheels, adapted to send aplurality of simultaneous selective indications to said signal receivingapparatus from said sections;

23. A railway signalin system, comprising a signaling circuit am aplurality of sec tions of railroad track, a signal receiving apparatusassociated wlth said sections, and

electric means, includin closed circuit track portions adapted to sen aplurality of simultaneous selective indications to said signal receivingapparatus from said sections over said circuit.

24. A signaling system for railways, comprising a selective signalreceiving device associated with a plurality of sections of a railroadtrack, and electric means associated with each section of track, andcontrolled by the presence of cars in their respective sec tions, toselectively operate sald selective signal device, said means beingadapted to send a plurality of simultaneous noninterfering signals tosaid device.

25. A signaling system for railroads, comprising a selective signalreceivin device, associated by means of a circuit, with a plurality ofsections of a railroad track, and electric means, associated with eachsection of track and controlled by cars in their respective sections,adapted to send a plurality of noninterferin simultaneous selectiveindications to sai signal receiving device.

In witness whereof, I hereunto subscribe my name this sixth day ofApril, A. D. 1907.

MAX W. ZABEL.

Witnesses:

W. L. DOLMAN, F. B. Boles.

